403 
Borrom Fauna, 1915, 1—3—roort Zonr, HAVANA TO LAGRANGE DAM (42.5 MILES) 
vies : Small 
Viviparidae Insects, 
and ‘ eet worms, Total 
Pleuroceridae Sphaeriidae Crustacea 
Number per sq. yard, 
Average 99.3 91.1 18.3 208.6 
20 coll.’s 
Pounds per acre, 
Average 385.7 44.6 5.2 435.5 
20 coll.’s 
Per cent. of total, 
(By weight) 88.5% 10.2% 11% 
Bottom Fauna, 1915, CHANNEL, Foor or Granp ISLAND To BrowNINnG 
(9 MILES) ; 
455 A Small 
Viviparidae Insects, 
: and : sepa ea worms, | Total 
Pleuroceridae Sphaeriidae Crustacea 
Number per sq. yard, 
Average 2.7 2.5 1.0 6.2 
2 coll.’s 
Pounds per acre, 
Average 1h) 5.0 6.0 12.5 
2 coll.’s 
Per cent. of total, 
(By weight) 12.0% 40.0% 48.0% 
> 
Botrrom Fauna, 1915, 4—7-roor Zone, Foor or Granp ISLAND TO BROWNING 
(9 MILES) 
a 3 Small 
Viviparidae Insects, 
and : pase ties worms, Total 
Pleuroceridae Sphaeriidae Crustacea 
Number per sq. yard, 
Average 92.4 106.4 10.3 209.1 
10 coll.’s 
Pounds per acre, 
Average 309.7 53.2 4.5 365.6 
10 coll.’s 
Per cent. of total, 
(By weight) 84.2% 14.5% 1.2% 
